6-u=-6+u

Solution for 6-u=-6+u equation:

Simplifying
6 + -1u = -6 + u

Solving
6 + -1u = -6 + u

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '-1u' to each side of the equation.
6 + -1u + -1u = -6 + u + -1u

Combine like terms: -1u + -1u = -2u
6 + -2u = -6 + u + -1u

Combine like terms: u + -1u = 0
6 + -2u = -6 + 0
6 + -2u = -6

Add '-6' to each side of the equation.
6 + -6 + -2u = -6 + -6

Combine like terms: 6 + -6 = 0
0 + -2u = -6 + -6
-2u = -6 + -6

Combine like terms: -6 + -6 = -12
-2u = -12

Divide each side by '-2'.
u = 6

Simplifying
u = 6